Permafrost Thaw and Bogland Loss Tolland Man. Credit: Sven Rosborn You may or may not be familiar with the bog man named Tolland Man. Tolland Man lived during the 4th century BCE and is believed to have been ritualistically sacrificed and buried in a bog in what is now Tolland, Denmark. The read more Loops of Change: the Positive Feedback Loops that Drive Climate Change (Part IV)